Marie-Sophie Nélisse is a Canadian actress. She is known for her Genie Award–winning performance in Monsieur Lazhar, as Liesel Meminger in the film adaptation of the best-selling novel The Book Thief, written by Markus Zusak, and as Caroline in The Kid Detective. She stars as young Shauna in Showtime's series Yellowjackets.

Monsieur Lazhar is a 2011 Canadian French-language drama film directed by Philippe Falardeau and starring Mohamed Saïd Fellag, Sophie Nélisse and Danielle Proulx. Based on Bashir Lazhar, a one-character play by Évelyne de la Chenelière, it tells the story of an Algerian refugee in Montreal who steps in to teach at an elementary school after the former full-time teacher dies by suicide.